Shaping eyebrows is a little like doing sculpture. Follow these steps:- Make sure you have plenty of light in the room when you are plucking.

The first step to tweezing is thinning the eyebrow, then slowly begin to define the arch. The arch of the eyebrow should reach the highest point above the middle of your iris. Thin the brow from that point out. The brows are the frame of your eyes.

The thickened body of the eyebrow should begin at a point directly above the tear duct.  The body of the eyebrow rises from its origin near the nose and arches upward to the high point over the iris, then tapers into a thin line near the ear.
Neitherthe beginning nor ending of the brow should extend below the pencil held in a horizontal position.
The end of the eyebrow should stop at a point determined by lining up a pencil at approximately a 45° angle starting at the nose and passing at the outer corner of the eye.

Neither the beginning nor ending of the brow should extend below the pencil held in a horizontal position. To pluck eyebrows, first apply an astringent such as witch hazel to anaesthetize the brow area.

Tweeze away any hairs that do not fall into those lines. Use sharp, good quality tweezers, or the hairs will break off instead of pulling out, which could lead to infection. First take out any stray hairs in the middle bit above your nose. It will help you get used to the feeling of plucking the hair because it is usually less sensitive here than above the eyes.

Start plucking from underneath the eyebrow, working from the inside, by the nose, to the outside. Pluck hairs in the direction that they grow. Doing so will keep the hairs smooth and will hurt less. Brush your eyebrows into place.
It’s also a good idea to tautly hold the skin right above the brow as you begin to tweeze-that will slightly reduce the pain of plucking. If the hairs are excessively long, it is perfectly okay to trim them with manicure scissors.

Use a pair of angled eyebrow tweezers to pluck the hairs below the brow; never shape your brow by plucking above it. Pluck only one hair at a time. Rub some soothing cream onto the area after wards.